Malcolm Baird
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Hi Phil, Sorry for the delay in replying. Hopefully the following photo will show what I meant in noting that R1A is approx 5/16" short by the time it's been fitted. R1 has the slot for the upper and lower 1/8" square wing spars in the correct position at the wing centre line. R1A is cut to the same outline, such that its length is the same as from the leading edge of R1, back to the front edge of the upper spar at the wing centre line. But by the time the upper wing spar has been fitted, its forward edge is about 1/16" rear of this on the other (outer) side of R1, and an additional 1/16" back from rear of the outer side of R1A. It would be neater if R1A was a bit longer (approx 5/16", and could then have its rear edge chamfered to fit snugly to the 1/16" sheet webbing between the spars. Purely my preference, and not a showstopper by any means. Your build blog is a delight to follow - I don't know where you find the time! thanks
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Demonstrating that R1A could do with being approx 1/8" longer
Malcolm Baird posted a gallery image in Member Albums
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Thanks for the positive feedback guys. My templates are as close to the plan outline as I can manage, and they generally highlight bits where further sanding is needed. Or alternatively where a bit of filler .... oops! I've now got the wing plan laid out, and starting to check the fit of parts. I found that the R1 doubler needed extending, and also the slots for spars only match the plan on one side of each rib (due to NC laser cutter probably not being able to cut a 32 degree slot), so a bit of filing and filling is called for there. I've noticed the dialogue on gussets too, so will bear that in mind.
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(I just noticed Phil had had a similar problem at **LINK** (15/05/2016 21:36:57)) Contrary to almost everyone else’s grain direction on the upper and lower fuselage, mine goes spanwise. I’ve always built this way, ever since Keilkraft, Veron, Frog, and Mercury kits top deck sheeting must have conditioned me… A small bit of surgical reconstruction to the fin, as I’d already assembled the laser cut components, has now produced the more visually pleasing layout, (well worth the effort!) 28/05/2016 Tailplane built and sanded, elevator ditto, and about to fit elevator servo before I start on the wing.
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Problem resolved by inserting a spare bit of balsa inside (Pic 5). ...and sanding outside......
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A couple of unexpected problems occurred as the upper surface approached its designated shape. Just forward of F4, (Pic3), and just forward of F7, (Pic4), a couple of holes appeared in the upper decking. I may have made the fuselage sides a tad too high, so that sanding back to my cross section template has resulted in overthinning.
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I cut a set of templates (Pic 2) to check the external profile as I went along.
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I had exactly the same problem in Chrome as well. Not IE (so far)
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15th May 2016 – A4 Skyhawk Build progress. Thought it was about time I reported on progress. The fuselage is coming along quite well (Pic 1), after converting a considerable quantity of balsa wood into dust. This latter op can only be done either at the far end of the garden (weather permitting), or while Mrs B is out. <how does one get a picture in here?> Edited By Malcolm Baird on 28/05/2016 23:46:27
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I've never thought of plasterboard before - excellent idea! I've previously used a bit of mdf or veneered chipboard - disadvantages -very hard and/or grainy. John - the nose (not the bit behind it) on your Supermarine Attacker looks very unscathed - what's it made of? Mine end up looking like they've been sandblasted after similar arrivals.
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Has anyone else lost F9? Not present in my woodpack. It appears on the plan, but I can't see it in any of the woodpack photos. No one else seems to have mentioned it. Was it the centre of F7?
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A4 Skyhawk - Building tips and Plan queries
Malcolm Baird replied to Phil Cooke's topic in PSSA Mass Build 2016 - A4 Skyhawk
Hi Phil, I must compliment Blackburn Model Supplies on their excellent customer service. On Sunday14th Feb I placed my order for the Skywhawk additional parts. On Monday they phoned me to say the specified snakes were unavailable, would another type do? I said yes, and on Tuesday the pack arrived on my doorstep in Dumfries, 130 miles up the road. 10/10 guys! The woodpack arrived on Wednesday, complete with F2 on a separate bit of balsa, I can't wait to get started.
